Improvement in coffee-pots



'P.H.1NMAN 8L CHARLES B. WlTHN'GTO'N.

Improvement in Coffee-Pois.

Paented Apr1125, 1871.

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PETER H. INMAN AND CHARLES B. WITHINGTON, 0F JANESVILLE,

WISCONSIN.

` Letters Patent No. 114,012. dated April 25, 1871.

IMPROVEMENT IN COFFEEPOTS.

The Schedule referred to in these Letters Patent and making part of the same.

To all whont'it'inlty concern:

Be it known that we, PETER H. INMAN and CHARLES. B. WITHINGTON, of Janesville, in the county of Rock and State of 1Wisconsin, have invented a new and improved Coffee-Pot; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others Skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

This invention relates to improvements in coffeepots, and consists in a combination, with a percolator placed in theipper part of the pot for receiving the ground coffee, of apparatus of a novel character, as hereinafter described, for causing a iiow of water from below, as it becomes heated, up to tbe percolatorfor iiltering the coffee.

The drawing is a sectional elevation of our improved coffee-pot.

A is a pot of ordinary construction, with a percolatin g-cnp, B, fitted in itat the top, below the cover, in which cup the ground coiee is to be placed' for liltering.

D represents an inverted cup-shaped piece of sheet metal of any suitable form, attached vto .the bottom as shown, or it may be a plane diaphragm arranged a short distance above the bottom so as to cover 'the bottom orvnearly so, and inclose a small space, E, above it.

F is a check-valve fitted in a hole in said cup at the highest point, or tbereabout, and opening downward.

Gis a tube leading from space D up through the bottom of the percolator, and extending about as high as the top of it.

A suitable quantity of water being put into the pot A and coffee in the cup B, the water will fili space E. Lhat portion in this space will be heated.- before tbe other is, and the steam generated therein will lift the valve F; or it may be made lighter than the water to be lifted by it when the space is full, and prevent tbe escape oi' steam tbz t way; consequently the steam will find its way up through pipe Gr to the percolator, carrying more or less water with it, and ltering the coffee as it falls back to the space above cup D. bis will continue until the water has been expelled from space E enough for the pressureto becorne less therein than above it, when the valve F will be opened again and another supply of water will be admitted to space E, and so on as long as the pot is kept suiiiciently hot.

This apparatus thus affords a simple and ready moans ot' completely extracting the ilavoring substance oi' the coiee from the solid matterby the iiltering process.

Having thus described our invention,

We claim as new and desire to secure by Letters Patent- The combination, with the vessel A and the porcolator B, of the cup D, or a diaphragm, valve F, and

tube Gr, all arranged for operation substantially as specified.

PETER H. INMAN. Nitnessesz Y GHAS. B. W'IiHINGr'ION.A

S. A. HUDSON, HENRY PALMER. 

